公开(公告)号：US20110045570A1

公开(公告)日：2011-02-24

申请号：US11719713

申请日：2005-11-16

申请人： Jie Lu ,  Zhijun Li ,  Si Hung Vo ,  Yuji Hatada ,  Ken Takai ,  Susumu Ito ,  Koki Horikoshi

发明人： Jie Lu ,  Zhijun Li ,  Si Hung Vo ,  Yuji Hatada ,  Ken Takai ,  Susumu Ito ,  Koki Horikoshi

IPC分类号： C12N9/52 ,  C12N9/50 ,  C07H21/04 ,  C07H21/00 ,  C12N15/63 ,  C12N1/21

CPC分类号： C12N9/52

摘要： The invention aims to provide a novel alkaline protease having peculiar properties such as high alkali activity, resistance to surfactants and calcium-dependent thermostability and exhibiting excellent performance in highly alkaline detergents, and a gene coding for the amino acid sequence thereof. There is provided an alkaline protease with such properties that an active pH range is from 5 to 13, an optimum pH is approximately 12.6, an optimum temperature is 70° C., no activity drop by heating is observed up to 65° C. at pH 10 and the optimum temperature and the thermostability are not affected by Ca2+ ions. Specifically, there is provided, for example, an alkaline protease having an amino acid sequence constituting a mature enzyme as represented by SEQ ID NO: 3 or an amino acid sequence resulting from deletion, substitution, situs inversus arrangement, addition or insertion of a part of amino acids thereof, or derived from Alkaliphillus transvaalensis. The protease cleaves 26 peptide bonds among 29 peptide bonds of acidic insulin B-chain.

摘要翻译： 本发明的目的在于提供一种具有高碱性，耐表面活性和钙依赖性热稳定性等特性，在高碱性洗涤剂中表现出优异性能的新型碱性蛋白酶及其氨基酸序列的编码基因。 提供了具有这样的性质的碱性蛋白酶，其活性pH范围为5至13，最佳pH为约12.6，最适温度为70℃，在65℃下不观察到加热下的活性降低 pH 10，最佳温度和热稳定性不受Ca2 +离子的影响。 具体地，例如提供了具有SEQ ID NO：3所示的构成成熟酶的氨基酸序列的氨基酸序列的碱性蛋白酶或由缺失，取代，位置反转排列，添加或插入部分 的氨基酸，或衍生自变形白菜（Alkaliphillus transvaalensis）。 蛋白酶在酸性胰岛素B链的29个肽键中切割26个肽键。

公开(公告)号：US08153413B2

公开(公告)日：2012-04-10

申请号：US11719713

申请日：2005-11-16

申请人： Jie Lu ,  Zhi jun Li ,  Si Hung Vo ,  Yuji Hatada ,  Ken Takai ,  Susumu Ito ,  Koki Horikoshi

发明人： Jie Lu ,  Zhi jun Li ,  Si Hung Vo ,  Yuji Hatada ,  Ken Takai ,  Susumu Ito ,  Koki Horikoshi

IPC分类号： C12N9/00 ,  C12N9/92 ,  C12N1/20 ,  C12N15/00 ,  C07H21/04

CPC分类号： C12N9/52

摘要： The invention aims to provide a novel alkaline protease having peculiar properties such as high alkali activity, resistance to surfactants and calcium-dependent thermostability and exhibiting excellent performance in highly alkaline detergents, and a gene coding for the amino acid sequence thereof. There is provided an alkaline protease with such properties that an active pH range is from 5 to 13, an optimum pH is approximately 12.6, an optimum temperature is 70° C., no activity drop by heating is observed up to 65° C. at pH 10 and the optimum temperature and the thermostability are not affected by Ca2+ ions. Specifically, there is provided, for example, an alkaline protease having an amino acid sequence constituting a mature enzyme as represented by SEQ ID NO: 3 or an amino acid sequence resulting from deletion, substitution, situs inversus arrangement, addition or insertion of a part of amino acids thereof, or derived from Alkaliphillus transvaalensis. The protease cleaves 26 peptide bonds among 29 peptide bonds of acidic insulin B-chain.

摘要翻译： 本发明的目的在于提供一种具有高碱性，耐表面活性和钙依赖性热稳定性等特性，在高碱性洗涤剂中表现出优异性能的新型碱性蛋白酶及其氨基酸序列的编码基因。 提供了具有这样的性质的碱性蛋白酶，其活性pH范围为5至13，最佳pH为约12.6，最适温度为70℃，在65℃下不观察到加热下的活性降低 pH 10，最佳温度和热稳定性不受Ca2 +离子的影响。 具体地，例如提供了具有SEQ ID NO：3所示的构成成熟酶的氨基酸序列的氨基酸序列的碱性蛋白酶或由缺失，取代，位置反转排列，添加或插入部分 的氨基酸，或衍生自变形白菜（Alkaliphillus transvaalensis）。 蛋白酶在酸性胰岛素B链的29个肽键中切割26个肽键。